Blow-torch.



R. M. G. PHILLIPS.

BLOW TORCH.

APPLICATION HLED OCT. 3.

2 SHEETS-SHEET 1.

Patented Aug, 31, 1915.

R. M. G. PHILUPS.

BLOW TORCH.

APPUCATION'HLED QCT.3,19I4.

Patented Aug. 31, 1915.

2 SHEETS-SHEET 2.

UNITEDSTATES P TENT onniois.

ROSS M. (Si-PHILLIPS, OF WES'I HAVEN, CONNECTICUT, ASSIGNOR TO THE SENTINEL MFG. 60., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

BLOWJIORCH.

Specification of Letters Patent.

Patented Aug. 31, 1915.

Application filed October 3, 1914. Serial No. 864,781.

To all whom it may concern Be it known that I, Ross M. G. PHILLIPS, a citizen of the United States, residing at \Vest Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Blow- Torches; and I do hereby declare the following, when taken in connection with the ac-' companying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this ap plication.

Figure 1 is a broken View in side eleva tion of one form which my improved blowtorch may assume. Fig. 2-is a broken plan view thereof. Fig. 3 is a broken view thereof partly in elevation and partly in vertical longitudinal section. Fig. 4 is a broken view partly in vertical section, and partly in side elevation of one of the modified forms modified form which my invention may assume. Fig. (3 is a broken view in side elevation of still another modified form of my improved blow-torch.

hly invention relates to an improved blowtorch of the kind used for brazing, welding paint-removing and other kindred uses, the object being to provide a simple and convenient device constructed with particular reference to the convenient control of the/gascontent supplied to the mixture by the hand in which the torch is hold at the time of using it, concurrently with the use of the torch, and without recourse to the use of the other hand which is thus left free.

\Vith these ends in view, my invention consists in a blow-torch having certain. de-

tails of construction and combinations of.

parts as will be hereinafter described and pointed out inthe claims.

As herein shown, I employ parallel gas and air-pipes 2 and 3 having their outer ends respectively entered into two parallel sleeves.

ward by the user of the of devices. The inner or handle ends of the said pipes 2 and 3 are as shown secured together and supported by a transverse strut 8. 'The gas-pipe 2 is furnished with a suitable gascock or valve 9 having a handle 10, while the air-pipe 3 is furnished with a suitable air-cock or valve 11 having a handle 12. The gas-pipe 2 is located on the outside of the torch with respect to the air-pipe 3 which is on the inside of the torch, but this arrangement may bereversed as will appear later on. I

In carrying out my invention as shown in Figs. 1, 2 and 3, I provide a sliding valvemanipulating; device 13 made from a single piece of wire and mounted upon the outside of the gas-pipe in position to be readily manipulated by the thumb of the hand in which the user is holding the torch. As shown, the said sliding valve-manipulsting device 13 is shaped at its inner end to form .an operating-loop 14 which extends rearwardly over the gas-cock 9 directly in front of which the wire-forming the device 1.3 is bent to form two coils 15 and 16 which embrace the gas-pipefl and serve to guide the said device, the forward portion of which passes through a sheet-metal clip 17 applied. to the gas-pipe 2 and held in place by a screw 18. In front of the clip 17, the sleeve 4 of the head 6 is'furnished with two lugs 19 between which the forward end of the device 1 passes and by means of which it is guided. At its extreme forward end the wire forming the device 13 is bent toform a book 20 by means of which the torch is suspended so as to hang in a vertical posi tion when not in use. Theinner arm 21 of the hook 120 co-acts directly with the head 22 of the stem 23 of a supplemental gasvalve 24 co-acting with a valve-seat :25 in the head 6 as shown in Fig. 3. The said valve-stem 23 is mounted in'a gland 26 threaded into the head 6 and containing a helical spring 27 surrounding the stem 23 and exerting, a constant effort to hold the valve in its open position. When the wire valve-manipulating device 13 is pushed out torch, who presses the loop 14 forward with his thumb, the arm 21 of the suspension-loop 20 cams against the head 22 of the valve-stein 23 so as to overcome the tension of the spring 27 and entirely or partially shut off the gas at this tinre'being supplied freely through the gaspipe 2 on account of the open position of the gas-cock 9. The said head 6 i formed with a passage 28 from which the gaspasses into the inner end of the mixing-tube 7 which contains an air-nozzle 29 leading from the forward end of the air-pipe 3.

By using the thumb to manipulate the sliding valve-manipulating device 13, i the gas-content supplied to the flame of the torch may be easily controlled concurrently with the use of the torch and without bringing the other hand of the user of the torch into requisition. The forward movement of the device 13 is stopped by the engagen'ient of a shoulder 30 or bend in the wire with the head 22 of the valve-stem 23, and its rearuuird movement by the engagement of the coil 16 of the wire with the forward end of the gas-cock 9. As shown, the torch is provided with a small pilot-light tube 82 leading forward from the rear end of the gascock, and provided for relighting the torch as the exigencies of the work being done may require.

In using my'improved torch, the cocks or valves 9 and 10 are initially set to secure the mixture of air and gas required for producing the flame suited to the work at hand. The torch having been lighted, is now held in one hand and used in the ordinary manner. If during the use of the torch it is desired to vary the gas-content of the flame, or to shut the gas off entirely, this may be done by manipulating the device 13 by the thumb of the hand holding the torch, leaving the other hand entirely free. If the is en-- tirely cut off by the supplemental valve 24, the pilot light will remain burning for the ignition of the mixed gas and air the moment the said valve is again opened. By hanging up the torch by means of its hook 20, the supplemental gas-valve 24 is closed and held closed by the weight of the torch acting through the sliding valve-manipnlating device 13, without, ho vevcr, shutting off the pilot-light gas-supply.

In the modified form shown by Fig. L of the drawings, the supplemental gas-valve 33 is mounted upon the extreme inner end of the arm 34 of a sliding valve-manipulating device in the form of a slide 35 extending over andparallel with the gaspipe 36, the said arm 34: having bearing in a gland 37 mounted in the cast head 38. A spring 39 encircling the arm 34. exerts a constant effort to hold the valve 33 away from its seat 40 which is interposed between two passages r1.and 42 in. the head 38, the passage 42 being intersected by the air pipe 43 and being in line with the mixing-tube 44-... By

. in the mixti re.

the sliding device 35 in one direction or the other by the thumb of the hand holding the torch, the supplemental gasvalve 33 may be entirely or partially closed as called for by the" desired content of gas The bend 4:5 in the wire forming the device constitutes a suspension-loop for the torch, the weight of which will overcome the spring 39 and hold the valve 2-33 upon its scat l0 so long as the torch is suspended.

moving in the modified construction shown by Fig. 5, a supplemental gas-valve l6 co-actseat 47 in the head 48, is formed mg with a with a perforated hollow valve ste1n49 and normally held away from its seat by a helical spring 50 located 111 a chamber 51 in the said head. .The said valve l6 is operated by a plunger 52 passing through a gland 53 mounted in a threaded bushing 54 in the head l8. The projecting outer end of the plunger 52 is engaged by the arm 55 of a yoke-shaped lever 56 straddling the gaspipe 57 and hung upon a pin 58 in the head 4-8. The lever 56' which is furnished with a susmension-hook 59, is operated by a sliding wire 0 extending inward the pipe 57 and is provided at its inner end with a loop (not. shown) corresponding to the loop 14 or with some other means adapting it to be (ipera'ted by the thumb of the hand. holding the torch. In this.construction, the plunger BZfthe lever 56, and the slide 0 together form the valve-numipulating device. The gas on leaving the pipe 57 enters a passagetll in the head 4-8, passing thence through the perforated valve-stem 49 into the chamber ()2 in the head,'a1 1d thence into the mixing-tube 63 which receives an air-nozzle G4- conneeted with an air-pipe 65 which is entered into the head 48 and extends parallel with the gas-p pe 57. This modified device is operated in substantially the same way as the device of Figs. 1 to 3 inclusive, the di ll'erence lying in the mode of operating the supplemental. gasvalve 46 which tends to move into its open position.-

In the modified construction shown by Fig. 6 of the drawings, a supplemental gasvalve is dispensed with,.but the gas-content supplied to the flame is-still kept under the control of the user in the same manner as in the devices heretofore described; that is to say, by means of a valve-manipulating device arranged so as to be operated by the thumb of the hand holding the torch concurrently with the use thereof.

In the modified construction shown by Fig. 6, the valve-manipulating device 65 is located at the inner secured to a collar 66 end of a tube 67 arranged to slide back and forth on the air-pipe 68 which in this form is located on the outside of the torch. The

on the outside of' said tube 67 is furnished at its outer end with a lug 69 forming a support for the forward portion of the slide which is formed at its rear end with a loop or thumbpiece 70 for engagement by the thumb of the hand holding the torch. The said collar 66 is formed with a slot 71 receiving the inwardly bent arm 72 of the gas-cock or valve 73, whereby the same is opened and closed by the manual longitudinal movement of the Valve-inanipulating device 65*. The air-pipe 68 is provided with an aireock or valve 74 having a handle 75 of ordinary constructionf The forward end of the cook 74 is threaded for the application of an adjusting nut 70 which is engaged by the rear face of the collar (36 for which it constitutes an adjustable stop. By adjusting the nut 76 the content of gas supplied by the gas-cock or valve 7% may be easily regulated. The nut 76 having been adj listed as required, it is apparent that the cock 7%. will always be opened to the same point when the slide 65 is fully retracted. At its forward end the device 65 is furnished with a suspension loop 78 by means of which the torch is hung up.- The gas cook or gas-valve 73 is located in a gas-pipe 7.) arranged parallel with the air-pipe (38 but on the inside of the torch with respect to the same. The pipes 68 and 79 are entered into a delivery-head 80 furnished with a mixingtube 81 containing an air-nozzle 82. Av small pilot-light pipe 83 leading from the gas-pi ie 79 to the end of the tube 81 sup-v plies the gas required for maintaining the pilot-light. Although the construction of Fig. {3 has no supplemental gas-valve; it is characterized by having the gas shut off and turned on by means of a sliding valve-manipulating device operable by the user substantiall y in the same manner as in the other constructions.

My improved blow torch, as will be seen by the different forms herein shown and described, is characterized by its provision with a valve-manipulating device applied to its outer side over the outer of its two tubes in position to be manually operable for regulating orentirely shutting off the gas supplied to the mixture by the hand employed by the user of the torch for holding it and operating it, the operation of the slide being concurrently with the operation of the torch and without recourse to the use of the users other hand which is thus left free.

I claim:

1. In a blow torch, the combination with parallel gas and air-pipes, of gas and airvaxves for the said pipes, a supplemental gas-valve, and a valve-manipulating device applied to the exterior of one of the said pipes, co-acting with the said supplemental gas-valve and positionedto be operable by the hand' employed by the user to hold and operate the blow torch concurrently with such use of it, the said device being fur nished with a suspension-ht ok for the suspension of thetorch in a vertical position and for the closing: of the said supplemental air-valve by the weight of the torch.

2. In a-blow torch, the combination withparallel gas and air-pipes, of gas and airvalves therefor, a supplemental gas-valve, and a valve-manipulating device applied to the exterior of one of the said pipes so as to.

3. In a blow torch, the combination with gas and air pipes arranged-parallel with each other, of valves for controlling the passage of gas and air through the respective pipes, and a sliding, manually operable valve-manipulating device applied to the outer of the two pipes for controlling the gas con. ant of the mixture, the said, device being positioned to be operable bythe hand employed by the user for operating the torch and provided with a suspension-hook against which the Weight of the torch acts to shut off the gas. I I

4. In a blow torch, the combinationwith parallel gas and air-pipes, of a head applied to the delivery ends thereof, gas and airvalves for the respective pipes, a supple mental gas-valve located in the said head, 4

and a manually operable valve-manipulating device applied to the exterior of one of the said pipes in position to be operated by the hand employed by the userfor holding and operating the torch and to co-act with the said supplemental gas-valve located in the said head and furnished with a suspension-hook for the suspension of the torch in a vertical position, and for the shutting off of the gas by the weight of the torch, at the supplemental gas-valve.

5. In a blow torch, the combination .with the gas and air-pipes thereof, of gas and air-valves therefor, and a suspension device co-acting with a gas valve of the torch to close the said valve and cut off the gas by the weight of the torch when the. same is hung in a vertical position by the said device, the torch descending with respect to the suspension device by its weight after the suspension device has been engaged with a fixed point for the purpose of hanging up the torch.

6. In a blow torch,

the combination with the gas and airipes thereof, of a gas-valve,

and a valve-manipulating device applied to the torch is hung up by the said device.

scribing Witnesses.

In testimony Whereof, I have signed this specification in the presence of two sub- ROSS M. G. PHILLIPS.

Witnesses: v

. CLARA L. WEED, M. P. NICHOLS. 

